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General
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Open Custom GPT
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Feb 1, 2026
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Open Custom GPT
The no-code platform for building and embedding Custom GPTs using the OpenAI Assistants API
Video Tutorial • Quick Start • Features • Deployment
Open Custom GPT provides a user-friendly solution to quickly build a custom GPT and embed it on your website. Create AI assistants with custom instructions, file retrieval, code interpreter, and DALL-E capabilities - all without writing code.
Features
- No-Code Builder - Create powerful GPT assistants through an intuitive interface
- Assistants API Integration - Full support for OpenAI's latest Assistants API
- Code Interpreter - Enable Python code execution for data analysis
- File Retrieval - Upload documents for your assistant to reference
- DALL-E Integration - Generate images directly from your assistant
- Custom Functions - Add your own API actions and tools
- Embeddable Widget - Share or embed your GPT on any website
- Monetization Ready - Gate your Custom GPT behind a paywall
Quick Start
Prerequisites
- Node.js v18+
- OpenAI API Key
Installation
# Clone the repository git clone https://github.com/SamurAIGPT/Open-Custom-GPT.git cd Open-Custom-GPT # Install dependencies npm install # Build the project npm run build # Start the server npm start
Environment Setup
Create a
.env.localOPENAI_API_KEY=your_api_key_here
Convert Your Existing Custom GPT
Already have a Custom GPT on ChatGPT? Migrate it easily:
- Copy the instructions from your Custom GPT's Configure tab
- Paste them into Open Custom GPT's instructions section
- Enable Code Interpreter, DALL-E, or File Retrieval as needed
- Upload any files from your original Custom GPT
- Set up any custom functions/actions
Tech Stack
| Technology | Purpose |
|---|---|
| Next.js | React framework |
| OpenAI API | Assistants API |
| Tailwind CSS | Styling |
Deployment
Vercel (Recommended)
Docker
docker build -t open-custom-gpt . docker run -p 3000:3000 -e OPENAI_API_KEY=your_key open-custom-gpt
Embedding Your GPT
After creating your assistant, use the embed code to add it to any website:
<iframe src="https://your-deployment-url.com/embed/assistant-id" width="400" height="600" frameborder="0"> </iframe>
Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
Follow for Updates
Related Projects
- EmbedAI - Private document QnA
- Text-To-Video-AI - Generate videos from text
License
MIT License - see LICENSE for details.